 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ui.views.markers.internal;

 import java.util.ArrayList ;
 import java.util.Map ;

 import org.eclipse.core.resources.IMarker;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IWorkspaceRunnable;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.jface.dialogs.ErrorDialog;
 import org.eclipse.jface.viewers.ISelectionProvider;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.osgi.util.NLS;
 import org.eclipse.swt.dnd.Clipboard;
 import org.eclipse.ui.ISharedImages;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.ide.undo.CreateMarkersOperation;
 import org.eclipse.ui.ide.undo.WorkspaceUndoUtil;
 import org.eclipse.ui.part.MarkerTransfer;

 /**
  * Pastes one or more bookmark(s) from the clipboard into the bookmark
  * navigator.
  */
 public class ActionPasteMarker extends MarkerSelectionProviderAction {

     private IWorkbenchPart part;

     private Clipboard clipboard;

     private String [] pastableTypes;

     private String markerName;

     /**
      * Creates the action.
      *
      * @param part
      * @param provider
      * @param markerName
      * the name used to describe the specific kind of marker being
      * pasted.
      */
     public ActionPasteMarker(IWorkbenchPart part, ISelectionProvider provider,
             String markerName) {
         super(provider, MarkerMessages.pasteAction_title);
         this.part = part;
         this.pastableTypes = new String [0];
         this.markerName = markerName;
         setImageDescriptor(PlatformUI.getWorkbench().getSharedImages()
                 .getImageDescriptor(ISharedImages.IMG_TOOL_PASTE));
         setEnabled(false);
     }

     void setClipboard(Clipboard clipboard) {
         this.clipboard = clipboard;
     }

     /**
      * Copies the marker(s) from the clipboard to the bookmark navigator view.
      */
     public void run() {
         // Get the markers from the clipboard
 MarkerTransfer transfer = MarkerTransfer.getInstance();
         IMarker[] markerData = (IMarker[]) clipboard.getContents(transfer);
         paste(markerData);
     }

     void paste(final IMarker[] markers) {
         if (markers == null) {
             return;
         }

         final ArrayList newMarkerTypes = new ArrayList ();
         final ArrayList newMarkerAttributes = new ArrayList ();
         final ArrayList newMarkerResources = new ArrayList ();

         try {
             ResourcesPlugin.getWorkspace().run(new IWorkspaceRunnable() {
                 public void run(IProgressMonitor monitor) throws CoreException {
                     for (int i = 0; i < markers.length; i++) {
                         // Collect info about the markers to be pasted.
 newMarkerTypes.add(markers[i].getType());
                         newMarkerResources.add(markers[i].getResource());
                         newMarkerAttributes.add(markers[i].getAttributes());

                     }
                 }
             }, null);
         } catch (CoreException e) {
             ErrorDialog.openError(part.getSite().getShell(),
                     MarkerMessages.PasteMarker_errorTitle, null, e.getStatus());
             return;
         }

         final String [] types = (String []) newMarkerTypes
                 .toArray(new String [newMarkerTypes.size()]);
         final Map [] attrs = (Map []) newMarkerAttributes
                 .toArray(new Map [newMarkerAttributes.size()]);
         final IResource[] resources = (IResource[]) newMarkerResources
                 .toArray(new IResource[newMarkerResources.size()]);
         String operationTitle = NLS.bind(MarkerMessages.qualifiedMarkerCommand_title,
                 MarkerMessages.pasteAction_title, markerName);
         final CreateMarkersOperation op = new CreateMarkersOperation(types,
                 attrs, resources, operationTitle);
         execute(op, MarkerMessages.PasteMarker_errorTitle, null,
                 WorkspaceUndoUtil.getUIInfoAdapter(part.getSite().getShell()));

         // Need to do this in an asyncExec, even though we're in the UI thread
 // here,
 // since the marker view updates itself with the addition in an
 // asyncExec,
 // which hasn't been processed yet.
 // Must be done outside the create marker operation above since
 // notification for add is
 // sent after the operation is executed.
 if (getSelectionProvider() != null && op.getMarkers() != null) {
             part.getSite().getShell().getDisplay().asyncExec(new Runnable () {
                 public void run() {
                     getSelectionProvider().setSelection(
                             new StructuredSelection(op.getMarkers()));
                 }
             });
         }
     }

     void updateEnablement() {
         setEnabled(false);
         if (clipboard == null) {
             return;
         }

         // Paste if clipboard contains pastable markers
 MarkerTransfer transfer = MarkerTransfer.getInstance();
         IMarker[] markerData = (IMarker[]) clipboard.getContents(transfer);
         if (markerData == null || markerData.length < 1
                 || pastableTypes == null) {
             return;
         }
         for (int i = 0; i < markerData.length; i++) {
             try {
                 IMarker marker = markerData[i];
                 if (!marker.exists()) {
                     break;
                 }
                 boolean pastable = false;
                 for (int j = 0; j < pastableTypes.length; j++) {
                     if (marker.isSubtypeOf(pastableTypes[j])) {
                         pastable = true;
                         break;
                     }
                 }
                 if (!pastable) {
                     return;
                 }
                 if (!Util.isEditable(marker)) {
                     return;
                 }
             } catch (CoreException e) {
                 return;
             }
         }
         setEnabled(true);
     }

     /**
      * @param strings
      */
     void setPastableTypes(String [] strings) {
         pastableTypes = strings;
     }
 }

